155
B
E
E
F
G
H
I
J
K
L
M
N
2.3 Operating modes
The RoofVent
®
condens has the following operating modes:
■
Off
■
Ventilation
■
Recirculation
■
Recirculation night
■
Exhaust air
■
Supply air
■
Night cooling summer
Note
In many countries, it is permissible to reduce the air change rate when
fresh air temperatures are low. The RoofVent
®
condens takes advantage
of this in order to save energy: It switches automatically from supply and
extract air handling to mixed air operation.
The DigiNet control system regulates these operating modes automatically for
each control zone in accordance with the scheduler. In addition, you can:
■
manually switch the operating mode of a control zone,
■
switch each individual RoofVent
®
condens to operating mode off, recirculation,
exhaust air or supply air.
Code
1)
Operating mode
Use
Diagram
Description
OFF
Off
The fans are turned off. Frost protec-
tion remains active. There is no room
temperature control.
If the unit is not
needed
Supply air fan ................... Off
Exhaust air fan ................. Off
Energy recovery ............... 0 %
Fresh air damper .............. Closed
Recirculation damper ....... Open
Heating ............................ Off
VE2
Ventilation
The RoofVent
®
unit blows fresh air
into the room and draws off spent
room air. Heating and energy recovery
are controlled depending on the heat
demand and temperature conditions.
The room temperature set value day is
active.
During room use
Supply air fan ................... On
Exhaust air fan ................. On
Energy recovery ............... 0 – 100 %
Fresh air damper .............. Open
Recirculation damper ....... Closed
Heating ............................ 0 – 100 %
Mixed air operation
When fresh air temperatures are low, the
RoofVent
®
unit automatically switches to
mixed air operation (50 % fresh air, 50%
recirculation). The exhaust air fan works
at half the air flow rate.
Supply air fan ................... On (100 %)
Exhaust air fan ................. On (50 %)
Energy recovery ............... 100 %
Fresh air damper .............. Half open
Recirculation damper ....... Half open
Heating ............................ 100 %
RoofVent
®
condens
Construction and operation
Summary of Contents for RoofVent CON-9
Page 2: ......
Page 4: ...2...
Page 6: ...4...
Page 8: ...6...
Page 12: ...10 RoofVent LHW Use...
Page 40: ...38 RoofVent LKW Use...
Page 68: ...66 RoofVent twin heat Use...
Page 94: ...92 RoofVent twin cool Use...
Page 122: ...120 RoofVent twin pump Use...
Page 150: ...148...
Page 154: ...152 RoofVent condens Use...
Page 180: ...210 RoofVent LH Construction and operation...
Page 208: ...238 RoofVent LK Use...
Page 256: ...286...
Page 268: ...298...
Page 274: ...304...
Page 279: ......